:root {
  color-scheme: light;
  --bg: #e9f0f8;
  --bg-start: #eef4fb;
  --bg-end: #e7eef8;
  --shell: #f2f6fb;
  --header-bg: #f6f9fd;
  --panel: #ffffff;
  --panel-soft: #f5f8fc;
  --line: #d5dfeb;
  --line-strong: #a9bbd1;
  --ink: #20324a;
  --ink-soft: #607892;
  --blue: #1f4a82;
  --blue-strong: #2d67c3;
  --blue-soft: #e9f1ff;
  --control-bg: #f5f8fd;
  --control-hover: #edf4fd;
  --main-media-bg: #dfe8f4;
  --primary-hover: #245bb5;
  --shadow: 0 10px 28px rgba(42, 71, 110, 0.08);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f1624;
  --bg-start: #090e17;
  --bg-end: #121b2c;
  --shell: #111a2b;
  --header-bg: #121c2c;
  --panel: #161f30;
  --panel-soft: #1b2638;
  --line: #24324a;
  --line-strong: #d4ccba;
  --ink: #f2efe6;
  --ink-soft: #a3b1c6;
  --blue: #8fb9ff;
  --blue-strong: #69a5f5;
  --blue-soft: #0d1422;
  --control-bg: #1d2739;
  --control-hover: #263349;
  --main-media-bg: #101726;
  --primary-hover: #7fb1fa;
  --shadow: 0 20px 44px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(180deg, var(--bg-start) 0%, var(--bg-end) 100%);
  color: var(--ink);
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-shell {
  width: min(1280px, calc(100% - 1.4rem));
  margin: 0.7rem auto;
  border: 1px solid var(--line);
  background: var(--shell);
  box-shadow: var(--shadow);
}

.store-header {
  min-height: 3.4rem;
  padding: 0.75rem 1rem;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
  background: var(--header-bg);
}

.panel-kicker,
.section-kicker,
h1,
h2,
h3,
p {
  margin: 0;
}

.store-nav {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.store-nav a,
.header-link,
.theme-toggle {
  min-height: 2.3rem;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--line-strong);
  background: var(--control-bg);
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.92rem;
}

.store-nav a:hover,
.store-nav a:focus-visible,
.header-link:hover,
.header-link:focus-visible,
.theme-toggle:hover,
.theme-toggle:focus-visible {
  background: var(--control-hover);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.theme-toggle {
  cursor: pointer;
  font: inherit;
}

.language-picker {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.language-picker select {
  min-width: 4.5rem;
  height: 2.3rem;
  padding: 0 0.7rem;
  border: 1px solid var(--line-strong);
  background: var(--control-bg);
  color: var(--ink);
  font: inherit;
}

.store-main {
  padding: 1rem;
}

.panel {
  border: 1px solid var(--line);
  background: var(--panel);
}

.accent-panel {
  background: var(--blue-soft);
  border-color: var(--line);
}

.panel-head {
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--line-strong);
}

.panel-head h2 {
  font-size: 1.02rem;
  font-weight: 600;
}

.product-layout,
.guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(340px, 0.82fr);
  gap: 1rem;
}

.gallery-panel,
.buy-card,
.guide-hero,
.guide-card {
  padding: 1rem;
}

.main-media {
  margin-top: 1rem;
  border: 1px solid var(--line-strong);
  background: var(--main-media-bg);
  overflow: hidden;
}

.main-media img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.panel-kicker,
.section-kicker,
.package-label {
  color: var(--ink-soft);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

h1 {
  margin-top: 0.45rem;
  font-size: clamp(2.1rem, 4.6vw, 3.2rem);
  line-height: 1.05;
  font-weight: 600;
}

.product-summary {
  margin-top: 0.95rem;
  color: var(--ink-soft);
  font-size: 1rem;
}

.price-box {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid var(--line);
  background: var(--panel-soft);
}

.price-label,
.price-note {
  color: var(--ink-soft);
}

.price-value {
  margin-top: 0.35rem;
  font-size: 2rem;
  font-weight: 700;
  color: var(--blue);
}

.price-note {
  margin-top: 0.35rem;
  font-size: 0.92rem;
}

.cta-stack,
.link-buttons,
.compact-buttons {
  margin-top: 1rem;
  display: grid;
  gap: 0.75rem;
}

.shop-btn {
  min-height: 3rem;
  padding: 0.7rem 1rem;
  border: 1px solid var(--line-strong);
  background: var(--control-bg);
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.98rem;
  text-align: center;
}

.shop-btn:hover,
.shop-btn:focus-visible {
  background: var(--control-hover);
}

.shop-btn.primary {
  background: var(--blue-strong);
  border-color: var(--blue-strong);
  color: #ffffff;
}

.shop-btn.primary:hover,
.shop-btn.primary:focus-visible {
  background: var(--primary-hover);
}

.meta-grid {
  margin-top: 1rem;
  display: grid;
  gap: 0.75rem;
}

.meta-row {
  padding: 0.8rem 0;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.meta-row span {
  color: var(--ink-soft);
}

.store-section {
  margin-top: 1.2rem;
}

.section-heading {
  margin-bottom: 0.9rem;
}

.section-heading h2 {
  margin-top: 0.35rem;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  font-weight: 600;
}

.package-grid,
.detail-grid,
.faq-list {
  display: grid;
  gap: 1rem;
}

.package-grid,
.detail-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.package-card,
.detail-card,
.faq-item,
.step-card {
  padding: 1rem;
}

.package-card h3,
.detail-card h3,
.faq-item h3,
.step-card h3 {
  margin-top: 0.35rem;
  font-size: 1.18rem;
  font-weight: 600;
}

.package-card p + p,
.detail-card p + p,
.faq-item p + p {
  margin-top: 0.45rem;
  color: var(--ink-soft);
}

.package-price {
  margin-top: 0.8rem;
  color: var(--blue);
  font-weight: 600;
}

.plain-list {
  margin: 0.9rem 0 0;
  padding-left: 1.25rem;
}

.plain-list li + li {
  margin-top: 0.45rem;
}

.inline-link {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.link-stack {
  margin-top: 0.9rem;
  display: grid;
  gap: 0.7rem;
}

.link-stack a {
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line);
  background: var(--panel-soft);
}

body,
.site-shell,
.store-header,
.panel,
.store-nav a,
.header-link,
.theme-toggle,
.language-picker select,
.main-media,
.price-box,
.shop-btn,
.link-stack a {
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    box-shadow 180ms ease;
}

.step-card-list {
  display: grid;
  gap: 0.9rem;
}

.step-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
}

.step-no {
  width: 2.7rem;
  height: 2.7rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--blue-strong);
  color: #ffffff;
  font-weight: 700;
}

.step-card p {
  margin-top: 0.35rem;
  color: var(--ink-soft);
}

.support-card {
  padding: 1.2rem;
}

.support-copy {
  margin-top: 0.75rem;
  max-width: 52rem;
  color: var(--ink-soft);
  font-size: 1rem;
}

.support-btn {
  margin-top: 1rem;
  min-width: min(22rem, 100%);
}

.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 360ms ease, transform 360ms ease;
  transition-delay: var(--delay, 0ms);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .product-layout,
  .guide-layout,
  .package-grid,
  .detail-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 880px) {
  .store-header {
    grid-template-columns: 1fr;
  }

  .store-nav {
    justify-content: flex-start;
  }

  .header-tools {
    justify-content: space-between;
    flex-wrap: wrap;
  }

  .meta-row,
  .step-card {
    grid-template-columns: 1fr;
    display: grid;
    gap: 0.4rem;
  }

  .site-shell {
    width: min(1280px, calc(100% - 0.8rem));
    margin: 0.4rem auto;
  }

  .store-main {
    padding: 0.8rem;
  }

  h1 {
    font-size: clamp(1.9rem, 10vw, 2.8rem);
  }
}